Here's a new one. Installed a set of double convoluted air bags in the back of my 3500 drwl .after packimg my 3400 lb Lance camper for 3 days I suddenly felt the left side drop. I pulled over to check the height and measured a 2.5" difference .I assumed that the left bag had failed. To my surprise a small amount of air (maybe 10lb) was still there. I re inflated the bag and made the trip home no problem.
I have a separate air supply so there is no other source of air and I could not find a leak.
I have no passed experience with these bags and have allways used overload springs with my other trucks.
My plan is to inflate yhem to max and use soap and water but as the air level is still good I doubt that I will find anything.

Any ideas?

sounds like the controller?

:idea: Thank you but this is basic system no controller,

Well you said you separated the air supply! ????? Maybe one of the air lines burped at the quick connect? If equipped? Z